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    Reactive aqueous polyurea dispersions prepared by an emulsion polymerization process
    5.
    发明公开
    Reactive aqueous polyurea dispersions prepared by an emulsion polymerization process 失效
    Durch乳液聚合反应产物Polyharnstoffdispersionen。

    公开(公告)号：EP0568976A1

    公开(公告)日：1993-11-10

    申请号：EP93107213.6

    申请日：1993-05-04

    申请人： Bayer Corporation

    发明人： Rosthauser, James W. ,  Tirpak, Robin E.

    IPC分类号： C08G18/08 ,  C08G18/50 ,  C08G18/70 ,  C08G18/80

    CPC分类号： C08G18/706 ,  C08G18/0819 ,  C08G18/0866 ,  C08G18/5024 ,  C08G18/6688

    摘要： The present invention is directed to a process for the preparation of an aqueous polyurea dispersion containing blocked isocyanate groups and unreacted isocyanate-reactive groups by

    I) dispersing in water

    a) a polyisocyanate which has an average functionality of 1.5 to 4.0 and an isocyanate content of at least 12% by weight,
    b) 10 to 70 equivalent percent, based on the isocyanate groups of component a), of a monofunctional blocking agent which is more reactive with isocyanate groups than water and
    c) an amine component containing

    i) 2 to 55 equivalent percent of a polyamine having at least two primary and/or secondary amino groups and a molecular weight of at least 1000,
    ii) 5 to 70 equivalent percent of a polyamine having at least two primary and/or secondary amino groups, a molecular weight of less than 400 and at least one anionic or potential anionic group and
    iii) up to 70 equivalent percent of an isocyanate-reactive compound having a molecular weight of less than 400 and containing at least one primary or secondary amino group and at least one other isocyanate-reactive group,

    wherein the equivalent percents of component c) are based on the total equivalents of isocyanate-reactive groups present in component c) and wherein the polyurea contains an equivalent ratio of blocked isocyanate groups to unreacted isocyanate-reactive groups of 2:1 to 0.8:1, and
    II) reacting the polyisocyanate with components b) and c) to form an aqueous polyurea dispersion.

    The present invention is also directed to the aqueous polyurea dispersion prepared by this process.

    摘要翻译： 本发明涉及一种制备包含封闭的异氰酸酯基团和未反应的异氰酸酯反应性基团的含水聚脲分散体的方法，I）在水中分散a）将平均官能度为1.5〜4.0，异氰酸酯含量为 至少12重量％，b）基于组分a）的异氰酸酯基团，与异氰酸酯基团比水更具反应性的单官能封端剂为10至70当量，和c）含有i）2至 55当量％的具有至少两个伯和/或仲氨基和分子量至少为1000的多胺，ii）5至70当量％的具有至少两个伯和/或仲氨基的多胺，分子 小于400的重量和至少一种阴离子或潜在的阴离子基团，和iii）高达70当量％的分子量小于400的异氰酸酯反应性化合物，并且含有 至少一个伯或仲氨基和至少一个其它异氰酸酯反应性基团，其中组分c）的当量百分比基于组分c）中存在的异氰酸酯反应性基团的总当量，并且其中聚脲含有等同物 封闭的异氰酸酯基团与未反应的异氰酸酯反应性基团的比例为2:1至0.8:1，和II）使多异氰酸酯与组分b）和c）反应以形成聚脲水分散体。 本发明还涉及通过该方法制备的水性聚脲分散体。

    Aqueous polyurea dispersions prepared by an emulsion polymerization process
    7.
    发明公开
    Aqueous polyurea dispersions prepared by an emulsion polymerization process 失效
    Ausgehend von einem Emulsionspolymerisationsverfahren hergestellte，wässrigePolyharnstoffdispersionen。

    公开(公告)号：EP0507143A2

    公开(公告)日：1992-10-07

    申请号：EP92104539.9

    申请日：1992-03-17

    申请人： Bayer Corporation

    发明人： Tirpak, Robin E. ,  Markusch, Peter H. ,  Sarpeshkar, Ashok M.

    IPC分类号： C08G18/08 ,  C08G18/50 ,  C08G18/76 ,  C08G18/28

    CPC分类号： C08G18/5024 ,  C08G18/0866 ,  C08G18/5048

    摘要： The present invention is directed to a process for the preparation of an aqueous polyurea dispersion by

    a) dispersing in water at an NCO:NH equivalent ratio of 0.5:1.0 to 2.0:1.0

    i) a polyisocyanate which has an average functionality of 1.5 to 4.0 and an isocyanate content of at least 12% by weight and
    ii) a polyamine having at least two primary and/or secondary amino groups and a molecular weight of at least at an NCO:OH equivalent ratio of 0.5:1.0 to 2.0:1.01000 and

    b) allowing the polyisocyanate and polyamine to react to form an aqueous polyurea dispersion.

    The present invention is also directed to the aqueous polyurea dispersion prepared by this process.

    摘要翻译： 本发明涉及一种通过以下方法制备聚脲分散体水溶液的方法：a）以0.5:1.0至2.0:1.0的NCO:NH当量比分散于水中i）多异氰酸酯，其平均官能度为1.5至4.0 和异氰酸酯含量为至少12重量％，和ii）具有至少两个伯和/或仲氨基并且至少NCO:OH当量比分子量为0.5:1.0至2.0:1.01000的多胺和 b）使多异氰酸酯和多胺反应形成聚脲水分散体。 本发明还涉及通过该方法制备的水性聚脲分散体。

    Aqueous polyisocyanate dispersions with reduced isocyanate contents and their use for the production of fiberglass mats
    8.
    发明公开
    Aqueous polyisocyanate dispersions with reduced isocyanate contents and their use for the production of fiberglass mats 失效
    水性聚异氰酸酯分散体具有降低的异氰酸酯含量以及它们用于生产玻璃纤维垫中的用途。

    公开(公告)号：EP0505875A1

    公开(公告)日：1992-09-30

    申请号：EP92104482.2

    申请日：1992-03-16

    申请人： Bayer Corporation

    发明人： Tirpak, Robin E. ,  Markusch, Peter H. ,  Sarpeshkar, Ashok M.

    IPC分类号： C08G18/08 ,  C08G18/32 ,  C08J5/24

    CPC分类号： C08G18/3271 ,  C03C25/25 ,  C03C25/326 ,  C08G18/0804 ,  C08G18/3225 ,  C08G18/5036 ,  C08G18/706 ,  C08G18/8038 ,  C08G18/8041 ,  Y10T428/2938 ,  Y10T442/2484 ,  Y10T442/2992

    摘要： The present invention is directed to an aqueous polyisocyanate dispersion which has an isocyanate content of at least 0.5% by weight, based on the weight of the polyisocyanate, and is prepared by

    a) dispersing in water a polyisocyanate which has an isocyanate content of at least 12% by weight and
    b) reacting the dispersed polyisocyanate with

    i) a primary or secondary monoamine containing at least one hydroxyl group in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.7:1.0 and
    ii) a polyamine having primary and/or secondary amino groups and a molecular weight of 400 or less in an amount sufficient to provide an equivalent ratio of amino groups to isocyanate groups of 0.1:1.0 to 0.4:1.0,
    wherein component i) is mixed with the dispersed polyisocyanate either before or during the mixing of component ii) and provided that the equivalent ratio of amino groups from both components i) and ii) does not exceed 0.95:1.0.

    The present invention is also directed to a process for the preparation of a fibrous mat by treating fibers with the dispersed polyisocyanate before the isocyanate content of the dispersed polyisocyanate is less than 0.5% by weight, based on the weight of the polyisocyanate. Finally, the present invention is directed to the fibrous mats obtained in accordance with this process.

    摘要翻译： 由本发明涉及在多异氰酸酯wässrige分散其中具有与异氰酸酯至少0.5％重量的含量，基于聚异氰酸酯的重量，并且通过制备）在水中的聚异氰酸酯其中具有与异氰酸酯的含量分散至少 重量12％，和b）其中i起反应的分散多异氰酸酯）的伯或仲单胺在量足以在氨基基团的当量比异氰酸酯的0.1团以提供包含至少一个羟基基团中：1.0至0.7：1.0和ii ），具有伯和/或仲氨基和400或在量足以在氨基基团的当量比，以提供异氰酸酯的0.1团少的分子量的聚胺：1.0至0.4：1.0，worin组分i）混合与 分散的聚异氰酸酯之前或组分ii）和提供的混合过程中所做的氨基的当量比从两种组分i）和ii）的大小限制0.95：1.0。 因此，本发明涉及用于通过用分散的聚异氰酸酯纤维之前分散多异氰酸酯的异氰酸酯含量是按重量计小于0.5％，基于聚异氰酸酯的重量在制备纤维垫的方法。 最后，本发明涉及在雅舞蹈得到此过程中，纤维垫。